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Finance debt (Details 3) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Proceeds from finance debt $ 2,210 $ 2,880
Repayment of principal (4,238) (9,196)
Repayment of interest (1,964) (1,846)
Net Cash Used In Financing Activities [Member]    
IfrsStatementLineItems [Line Items]    
Proceeds from finance debt 2,210 2,880
Repayment of principal (4,193) (9,334)
Repayment of interest (1,978) (1,850)
Finance Debt [Member] | Changes In Finance Debt [Member]    
IfrsStatementLineItems [Line Items]    
Proceeds from finance debt 2,210 2,880
Repayment of principal (4,238) (9,196)
Repayment of interest (1,964) (1,846)
Finance Debt [Member] | Repurchase Of Debt Securities [Member]    
IfrsStatementLineItems [Line Items]    
Repayment of principal 78 (121)
Finance Debt [Member] | Deposits Financing [Member]    
IfrsStatementLineItems [Line Items]    
Repayment of principal (33) (17)
Repayment of interest $ (14) $ (4)